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Deutsches Elektronen-Synchrotron DESY Notkestraße 85 22607 Hamburg, Germany http://www.desy.de
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Deutsches Elektronen-Synchrotron DESY

Südpol-Teleskop liefert überraschenden Befund zu kosmischen Super-Beschleunigern

Beobachtung stellt Theorie zum Ursprung der Kosmischen Strahlung auf den Prüfstand

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Die stärksten Teilchenbeschleuniger finden sich nicht auf der Erde, sondern im Weltall: Aus dem Kosmos prasseln subatomare Teilchen auf die Erdatmosphäre, die noch millionenfach höhere Energie haben als jene im Large Hadron Collider (LHC), dem stärksten Beschleuniger der Erde. Auf welche Weise diese sogenannte kosmische Teilchenstrahlung so stark beschleunigt wird, ist allerdings noch weitgehend rätselhaft. Mit dem weltgrößten Neutrino-Teleskop IceCube in der Antarktis haben Forscher eine der vermuteten Arten kosmischer Super-Beschleuniger untersucht und festgestellt, dass sie möglicherweise doch nicht für die energiereichsten Teilchen verantwortlich sind. Damit wird eine der beiden führenden Hypothesen zum Ursprung der höchstenergetischen kosmischen Teilchen infrage gestellt,
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